Sugar Daddy

Moxxi can be found in Sanctuary. She has her own bar in the south-eastern corner of the town. On the counter is a jar where you can leave some money for her.

Give here 10 x $1000! Since you won't get anything in return it's a good idea to leave the game without saving. Sell your equipment to get money quickly. Upon reaching $20,000 you begin to have a chance at winning two items from Moxxi.